package com.cn.config.security.handler;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.cn.utils.Result;
import com.cn.utils.ResultCode;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.stereotype.Component;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
/**
 * 认证用户访问无权限资源时处理器
 */
@Component
public class CustomerAccessDeniedHandler implements AccessDeniedHandler {
    @Override
    public void handle(HttpServletRequest request, HttpServletResponse
            response, AccessDeniedException accessDeniedException) throws IOException,
            ServletException {
    //设置客户端的响应的内容类型
    response.setContentType("application/json;charset=UTF-8");
    //获取输出流
    ServletOutputStream outputStream = response.getOutputStream();
    //消除循环引用 ResultCode.NO_AUTH = 700
    String result =
            JSON.toJSONString(Result.error().code(ResultCode.NO_AUTH).message("无权限访 问, 请联系管理员！"),
            SerializerFeature.DisableCircularReferenceDetect);
    outputStream.write(result.getBytes(StandardCharsets.UTF_8));
    outputStream.flush();
    outputStream.close();
    }
}
